BEPC-LINAC试验束上1GeV/c多粒子磁谱仪的设计和性能测量  

Design and Performance Measurement of the 1GeV/c Multiparticle Magnetic Spectrometer in the BEPC-Linac Test Beam

作　　者：李家才[1] 张良生[1] 胡春良[1] 吴元明[1] 崔象宗[1] 刘正全[1] 张少平[1] 周宝庆[1] 郑林生[1] 

机构地区：[1]中国科学院高能物理研究所,北京100049

出　　处：《高能物理与核物理》2005年第1期55-61,共7页High Energy Physics and Nuclear Physics

基　　金：国家BEPC改进专项经费资助~~

摘　　要：试验束上 2Q2D结构的磁谱仪系统由 2块二极磁铁和 2块四极磁铁以及位置灵敏探测器组成 .该磁谱仪的接收立体角 5× 10 - 4sr ,动量范围 0 .2— 1.3GeV/c .测量了聚焦面上的束流截面和动量谱 .介绍了一种测量电子与质子飞行时间差的动量测量方法 .The 2Q2D magnetic spectrometer operating at the BEPC-Linac test beam site consists of 2 quadrupole magnets, 2 dipoles and 2 position sensitive detectors. The spectrometer has a maximum acceptance of solid angle 5 × 10-4 sr, a momentum range 0.2-1.3 GeV/c. Beam cross section and momentum spectra have been measured on the focal plane. A reference method for momentum measurement based on the TOF difference of proton and electron is introduced.

关 键 词：试验束 BEPC 立体角 粒子 磁谱 质子 动量 位置灵敏探测器 二极磁铁 四极磁铁 

分 类 号：TL817.5[核科学技术—核技术及应用]